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what is the usage of 304L stainless steel tube

Date:Jul 15, 2019

304L stainless steel tube belongs to the international stainless steel marking method. 304L stainless steel tube--S30403 (American AISI, ASTM) 304L corresponds to the Chinese brand 00Cr19Ni10, which is a steel with lower carbon content than 0Cr19Ni9. It has excellent resistance to intergranular corrosion and is not heat-treated after welding.

Chemical composition of 304L stainless steel tube:

Element content of 304L stainless steel tube C≤0.03 Ni8.0012.00 Cr18.0020.00, Mn<=2.0 Si<=1.0 S<=0.030 P<=0.035. 304L stainless steel tube as low C 304 steel, in general state The corrosion resistance is similar to that of 304 steel, but it has excellent resistance to intergranular corrosion after welding or after stress relief; it can maintain good corrosion resistance without heat treatment, and the temperature is -196 °C. ~800 °C. It is used in field open-air machines for chemical, coal, and petroleum industries with high resistance to intergranular corrosion, heat-resistant parts for building materials, and parts with difficult heat treatment.

Use range:

1. Heat exchanger tube

Performance characteristics: smooth inner wall of the pipe, low water resistance, erosion and solid solution treatment, the mechanical properties and corrosion resistance of the weld bead and the substrate are basically the same, and the deep processing performance is excellent.

2.thin-walled stainless steel tube

Performance characteristics: long service life; low failure rate and water leakage rate; good water quality, no harmful objects will be precipitated into the water; the inner wall of the pipe is not crusted,smooth, low water resistance;high cost performance,long service life of 100 years, no Maintenance,low cost;can withstand high water flow erosion up to 30m/s; clear tube laying, beautiful appearance.

3. Food hygiene tube

Performance characteristics: the internal surface roughness Ra is more than 0.2, the wall hanging residue is small, easy to clean, prevent bacterial growth, electrolytic polishing has a passivation effect, and the inner wall has good defense performance.

4. fluid tube stainless steel tube

Carefully manufactured stainless steel inner flat welded pipe, widely used in dairy products, beer, beverage, pharmaceutical, biological, cosmetic, fine chemical compared to ordinary sanitary steel pipe, its surface finish and smooth inner wall, steel plate flexibility is better, coverage Wide, uniform wall thickness, higher precision, no pitting, good quality.

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